Geomagnetic Activity Map - Hourly Ranges
Note: Empty cells of observatories (indicated in the leftmost column by their IAGA codes) indicate that there was insufficient data to calculate a hourly range.
| IAGA | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AAA | ||||||||||||||||||||||||
| AAE | 1 | 1 | 1 | 3 | 5 | 9 | 4 | 4 | 2 | 9 | 4 | 13 | 3 | 2 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| ABG | 5 | 4 | 8 | 12 | 10 | 5 | 6 | 10 | 5 | 5 | 4 | 4 | 4 | 5 | 2 | 3 | 2 | 3 | 2 | 3 | 5 | 4 | 4 | 3 |
| ABK | 30 | 29 | 21 | 20 | 23 | 13 | 21 | 7 | 5 | 4 | 7 | 9 | 17 | 18 | 5 | 9 | 13 | 16 | 47 | 59 | 89 | 119 | 94 | 67 |
| AIA | 2 | 3 | 3 | 8 | 24 | 9 | 8 | 3 | 2 | 1 | 3 | 3 | 3 | 3 | 5 | 4 | 4 | 5 | 2 | 6 | 3 | 3 | 2 | 2 |
| AMS | 4 | 4 | 5 | 3 | 3 | 2 | 1 | 1 | 2 | 5 | 4 | 2 | 3 | 4 | 4 | 4 | 3 | 1 | 3 | 4 | 2 | 5 | 2 | 4 |
| API | 3 | 1 | 3 | 1 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 1 | 2 | 1 | 2 | 2 | 3 | 1 | 3 | 1 |
| AQU | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 6 | 6 | 4 | 3 | 1 | 2 | 3 | 5 | 3 | 3 | 1 | 2 | 1 | 1 | 1 | 3 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 2 | 1 | 0 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 3 | 1 | 4 | 6 | 5 | 2 | 3 | 2 | 1 | 2 | 1 | 1 |
| ASP | 2 | 4 | 2 | 4 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 0 | 1 | 2 | 2 | 1 | 3 | 2 | 4 |
| BDV | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 9 | 7 | 4 | 7 | 5 | 6 | 3 | 2 | 2 | 3 | 1 | 1 | 3 | 3 | 2 |
| BEL | 2 | 3 | 4 | 2 | 2 | 3 | 1 | 5 | 10 | 13 | 6 | 8 | 11 | 9 | 7 | 2 | 2 | 4 | 2 | 2 | 1 | 4 | 5 | 2 |
| BFE | 5 | 5 | 5 | 4 | 8 | 7 | 2 | 2 | 9 | 6 | 7 | 6 | 5 | 10 | 10 | 5 | 5 | 5 | 6 | 4 | 4 | 6 | 16 | 4 |
| BFO | ||||||||||||||||||||||||
| BLC | 39 | 33 | 38 | 57 | 333 | 368 | 131 | 18 | 56 | 33 | 64 | 52 | 75 | 57 | 104 | 84 | 38 | 48 | 37 | 136 | 143 | 26 | 176 | 95 |
| BMT | 1 | 5 | 7 | 6 | 2 | 6 | 4 | 5 | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 4 |
| BNG | 2 | 1 | 2 | 1 | 2 | 11 | 2 | 5 | 7 | 7 | 5 | 1 | 3 | 3 | 1 | 1 | 5 | 2 | 1 | 1 | 2 | 2 | 2 | 2 |
| BOU | 2 | 2 | 1 | 1 | 11 | 6 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 9 | 7 | 1 | 5 | 8 | 5 | 3 | 1 | 3 |
| BOX | 5 | 4 | 4 | 2 | 1 | 1 | 5 | 5 | 8 | 4 | 5 | 6 | 8 | 8 | 4 | 2 | 1 | 2 | 1 | 1 | 4 | 2 | 11 | 4 |
| BRW | 17 | 16 | 29 | 31 | 62 | 28 | 31 | 25 | 41 | 38 | 53 | 31 | 36 | 123 | 59 | 71 | 97 | 81 | 85 | 36 | 49 | 25 | 20 | 17 |
| BSL | 3 | 3 | 3 | 3 | 13 | 5 | 2 | 4 | 1 | 1 | 2 | 3 | 5 | 7 | 8 | 1 | 3 | 5 | 2 | 6 | 1 | 5 | 5 | 2 |
| CBB | 49 | 55 | 62 | 25 | 170 | 174 | 31 | 4 | 52 | 32 | 64 | 51 | 67 | 30 | 72 | 70 | 143 | 90 | 169 | 89 | 73 | 48 | 149 | 29 |
| CLF | 1 | 2 | 1 | 1 | 3 | 2 | 2 | 2 | 4 | 5 | 7 | 8 | 4 | 8 | 6 | 6 | 5 | 2 | 3 | 1 | 1 | 2 | 3 | 2 |
| CMO | 16 | 15 | 30 | 23 | 56 | 55 | 23 | 18 | 35 | 24 | 20 | 20 | 31 | 74 | 53 | 51 | 29 | 25 | 22 | 16 | 18 | 24 | 9 | 4 |
| CNB | 5 | 2 | 3 | 5 | 4 | 3 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 8 | 7 | 5 | 1 | 2 | 5 | 3 | 2 | 4 | 6 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 3 | 3 | 2 | 4 | 3 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 3 | 2 | 2 | 1 |
| CZT | 5 | 4 | 5 | 3 | 6 | 4 | 4 | 7 | 7 | 1 | ||||||||||||||
| DLR | 3 | 2 | 4 | 3 | 9 | 4 | 3 | 2 | 1 | 1 | 3 | 3 | 1 | 2 | 7 | 7 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 |
| DOU | 3 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 5 | 5 | 9 | 5 | 5 | 9 | 5 | 6 | 4 | 2 | 3 | 2 | 1 | 5 | 4 | 4 |
| DRV | 89 | 118 | 175 | 70 | 63 | 77 | 23 | 13 | 25 | 23 | 30 | 24 | 25 | 114 | 47 | 38 | 29 | 55 | 79 | 36 | 48 | 28 | 57 | 42 |
| EBR | 10 | 5 | 5 | 3 | 4 | 7 | 5 | 3 | 9 | 6 | 6 | 7 | 3 | 4 | 7 | 6 | 9 | 5 | 7 | 5 | 4 | 4 | 5 | 4 |
| ESK | 7 | 3 | 2 | 1 | 8 | 4 | 5 | 2 | 1 | 4 | 5 | 8 | 2 | 8 | 10 | 7 | 2 | 3 | 7 | 3 | 1 | 6 | 8 | 4 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 3 | 4 | 9 | 7 | 5 | 3 | 2 | 3 | 1 | 3 | 3 | 3 | 8 | 6 | 6 | 2 | 3 | 3 | 1 | 4 | 2 | 8 | 3 |
| FCC | 27 | 22 | 46 | 168 | 380 | 320 | 105 | 75 | 75 | 61 | 48 | 23 | 24 | 36 | 38 | 14 | 13 | 12 | 14 | 15 | 24 | 20 | 31 | 30 |
| FRD | 2 | 2 | 2 | 2 | 6 | 3 | 5 | 1 | 1 | 1 | 2 | 0 | 6 | 2 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | 1 | 2 | 3 |
| FRN | 5 | 2 | 1 | 1 | 2 | 4 | 2 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 6 | 11 | 5 | 2 | 5 | 8 | 7 | 6 |
| FUR | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 5 | 5 | 8 | 2 | 6 | 7 | 5 | 3 | 2 | 1 | 2 | 0 | 1 | 3 | 3 | 2 |
| GCK | ||||||||||||||||||||||||
| GDH | 88 | 64 | 25 | 19 | 44 | 29 | 57 | 36 | 36 | 74 | 67 | 55 | 91 | 30 | 156 | 143 | 93 | 128 | 144 | 31 | 34 | 57 | 31 | 97 |
| GNA | 5 | 15 | 14 | 10 | 8 | 10 | 12 | 9 | 10 | 2 | 3 | 3 | 3 | 11 | 8 | 13 | 4 | 7 | 9 | 6 | 5 | 5 | 4 | 4 |
| GUA | 7 | 6 | 5 | 5 | 5 | 1 | 5 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 0 | 1 | 1 | 1 | 3 | 2 | 3 | 7 |
| GUI | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 3 | 1 | 4 | 10 | 9 | 8 | 2 | 5 | 7 | 5 | 5 | 3 | 2 | 2 | 1 | 3 | 1 |
| GZH | 2 | 6 | 10 | 6 | 2 | 7 | 7 | 5 | 2 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 3 | 1 |
| HAD | 2 | 3 | 2 | 2 | 8 | 1 | 2 | 1 | 4 | 3 | 8 | 11 | 4 | 11 | 13 | 7 | 3 | 4 | 3 | 3 | 1 | 3 | 6 | 3 |
| HBK | 4 | 3 | 4 | 3 | 5 | 7 | 4 | 4 | 3 | 9 | 8 | 9 | 5 | 5 | 4 | 6 | 2 | 3 | 3 | 2 | 2 | 3 | 4 | 3 |
| HER | 13 | 5 | 5 | 3 | 9 | 7 | 13 | 10 | 3 | 11 | 15 | 5 | 8 | 12 | 9 | 3 | 5 | 3 | 10 | 3 | 5 | 8 | 9 | 2 |
| HLP | 4 | 4 | 3 | 3 | 4 | 4 | 2 | 5 | 9 | 8 | 6 | 7 | 12 | 9 | 7 | 3 | 2 | 4 | 4 | 3 | 2 | 4 | 11 | 2 |
| HON | 3 | 1 | 3 | 2 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 6 | 4 | 9 | 17 | 6 | 2 | 6 |
| HRB | 1 | 2 | 1 | 1 | 1 | 3 | 3 | 4 | 5 | 10 | 6 | 4 | 6 | 7 | 7 | 4 | 3 | 2 | 3 | 1 | 1 | 3 | 3 | 1 |
| HRN | 46 | 63 | 77 | 57 | 57 | 140 | 57 | 35 | 27 | 27 | 43 | 35 | 114 | 72 | 33 | 15 | 31 | 45 | 79 | 41 | 39 | 39 | 44 | 40 |
| HUA | 2 | 1 | 3 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 4 | 1 | 2 | 2 | 9 | 5 | 2 | 4 | 1 | 1 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 35 | 54 | 21 | 30 | 230 | 164 | 152 | 27 | 22 | 32 | 74 | 41 | 42 | 30 | 22 | 28 | 55 | 60 | 229 | 74 | 116 | 29 | 24 | 59 |
| IRT | 2 | 1 | 4 | 5 | 5 | 12 | 4 | 6 | 7 | 7 | 3 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 3 | 5 | 7 | 6 | 5 | 3 | 2 | 4 | 4 | 3 | 3 | 3 | 3 | 6 | 5 | 2 | 2 | 5 | 3 | 4 | 3 | 5 | 8 |
| KDU | 3 | 3 | 7 | 2 | 1 | 1 | 2 | 2 | 2 | 3 | 1 | 1 | 2 | 2 | 4 | 2 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 7 | 11 | 6 | 4 | 6 | 17 | 5 | 4 | 4 | 3 | 4 | 3 | 2 | 2 | 5 | 4 | 1 | 2 | 4 | 2 | 3 | 6 | 5 | 5 |
| KOU | 2 | 2 | 2 | 1 | 6 | 4 | 2 | 1 | 2 | 1 | 3 | 7 | 4 | 5 | 1 | 7 | 7 | 1 | 6 | 1 | 4 | 2 | 3 | 2 |
| LER | 31 | 8 | 7 | 3 | 17 | 9 | 9 | 7 | 3 | 2 | 4 | 4 | 3 | 8 | 7 | 8 | 3 | 8 | 12 | 6 | 3 | 16 | 20 | 6 |
| LRM | 4 | 12 | 22 | 14 | 5 | 10 | 4 | 4 | 7 | 7 | 6 | 4 | 5 | 9 | 12 | 13 | 5 | 2 | 7 | 4 | 2 | 2 | 5 | 6 |
| LVV | 8 | 6 | 6 | 6 | 6 | 5 | 5 | 8 | 10 | 13 | 8 | 10 | 11 | 9 | 7 | 7 | 5 | 5 | 4 | 5 | 6 | 4 | 7 | 6 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 2 | 5 | 4 | 4 | 4 | 4 | 4 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 11 | 5 | 10 | 14 | 13 | 9 | 9 | 16 | 17 | 6 | 9 | 3 | 1 | 3 | 2 | 2 | 1 |
| MCQ | 11 | 16 | 26 | 25 | 46 | 18 | 34 | 5 | 14 | 23 | 23 | 20 | 55 | 110 | 80 | 80 | 51 | 21 | 17 | 18 | 7 | 17 | 12 | 4 |
| MEA | 13 | 18 | 11 | 21 | 72 | 83 | 30 | 14 | 31 | 18 | 17 | 8 | 7 | 11 | 12 | 5 | 5 | 5 | 3 | 4 | 7 | 8 | 21 | 6 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 4 | 4 | 6 | 1 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 4 |
| NAQ | 100 | 62 | 32 | 76 | 90 | 147 | 51 | 26 | 16 | 11 | 18 | 12 | 11 | 7 | 30 | 30 | 41 | 48 | 36 | 28 | 25 | 32 | 36 | 98 |
| NCK | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 4 | 7 | 6 | 3 | 5 | 5 | 6 | 3 | 2 | 1 | 2 | 1 | 1 | 2 | 3 | 1 |
| NEW | 2 | 7 | 3 | 3 | 15 | 11 | 4 | 1 | 3 | 2 | 3 | 1 | 2 | 3 | 1 | 1 | 4 | 8 | 6 | 1 | 5 | 8 | 7 | 1 |
| NGK | 4 | 3 | 2 | 1 | 2 | 3 | 3 | 2 | 6 | 10 | 7 | 3 | 10 | 6 | 8 | 3 | 3 | 4 | 6 | 2 | 3 | 7 | 2 | 4 |
| NUR | 16 | 5 | 6 | 4 | 8 | 5 | 5 | 4 | 5 | 5 | 4 | 4 | 9 | 8 | 6 | 5 | 3 | 4 | 2 | 5 | 5 | 14 | 15 | 6 |
| NVS | 4 | 3 | 5 | 1 | 4 | 8 | 12 | 10 | 8 | 12 | 9 | 5 | 4 | 4 | 5 | 6 | 4 | 5 | 3 | 3 | 4 | 3 | 2 | 4 |
| OTT | 5 | 2 | 3 | 11 | 27 | 9 | 21 | 2 | 1 | 4 | 4 | 3 | 3 | 3 | 6 | 2 | 6 | 6 | 3 | 8 | 5 | 2 | 6 | 4 |
| PAF | 5 | 7 | 7 | 5 | 5 | 3 | 3 | 3 | 4 | 1 | 2 | 4 | 3 | 2 | 2 | 3 | 5 | 3 | 3 | 6 | 9 | 7 | 12 | 2 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 2 | 6 | 8 | 11 | 4 | 6 | 10 | 4 | 3 | 3 | 4 | 3 | 2 | 3 | 4 | 3 | 1 | 3 | 2 | 2 | 2 | 1 | 7 | 3 |
| PPT | 1 | 4 | 1 | 5 | 6 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 4 | 8 | 4 | 3 | 4 | 10 | 7 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 1 | 1 | 4 | 3 | 3 | 4 | 6 | 8 | 2 | 4 | 3 | 2 | 3 | 1 | 1 | 1 | 1 | 3 | 1 | 2 | 2 | 2 | 1 |
| RES | 16 | 30 | 18 | 25 | 36 | 21 | 8 | 5 | 12 | 10 | 18 | 32 | 47 | 27 | 60 | 67 | 75 | 101 | 62 | 50 | 44 | 47 | 33 | 18 |
| SBA | 28 | 35 | 30 | 16 | 61 | 25 | 29 | 13 | 10 | 18 | 16 | 19 | 14 | 12 | 21 | 14 | 20 | 28 | 13 | 24 | 34 | 24 | 64 | 38 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 9 | 11 | 11 | 14 | 12 | 14 | 18 | 3 | 8 | 3 | 4 | 3 | 11 | 22 | 13 | 8 | 10 | 5 | 7 | 3 | 5 | 5 | 12 | 5 |
| SJG | 1 | 1 | 1 | 1 | 4 | 3 | 2 | 2 | 1 | 1 | 3 | 3 | 3 | 1 | 4 | 1 | 1 | 4 | 3 | 4 | 2 | 0 | 3 | 1 |
| SOD | 43 | 18 | 13 | 9 | 27 | 14 | 12 | 5 | 3 | 5 | 5 | 6 | 14 | 18 | 7 | 7 | 12 | 17 | 17 | 51 | 57 | 84 | 49 | 53 |
| SPT | 1 | 1 | 1 | 1 | 2 | 1 | 4 | 2 | 6 | 7 | 6 | 2 | 2 | 1 | 4 | 3 | 5 | 3 | 1 | 1 | 0 | 1 | 1 | 1 |
| STJ | 9 | 8 | 7 | 10 | 24 | 10 | 20 | 4 | 4 | 9 | 16 | 17 | 10 | 6 | 3 | 12 | 11 | 20 | 17 | 9 | 20 | 5 | 6 | 7 |
| SUA | ||||||||||||||||||||||||
| TAM | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 4 | 8 | 4 | 2 | 9 | 9 | 2 | 2 | 2 | 3 | 1 | 0 | 1 | 1 | 1 | 1 | 0 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 16 | 21 | 22 | 17 | 14 | 9 | 8 | 8 | 9 | 12 | 41 | 26 | 120 | 61 | 74 | 40 | 30 | 54 | 42 | 29 | 31 | 13 | 24 | 13 |
| THY | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 5 | 4 | 7 | 5 | 2 | 6 | 7 | 6 | 4 | 1 | 1 | 3 | 1 | 1 | 3 | 2 | 1 |
| TRW | 1 | 1 | 1 | 1 | 4 | 2 | 2 | 1 | 0 | 1 | 2 | 1 | 2 | 4 | 7 | 6 | 3 | 4 | 8 | 6 | 3 | 1 | 1 | 1 |
| TSU | 3 | 2 | 2 | 1 | 5 | 4 | 7 | 2 | 7 | 18 | 5 | 7 | 7 | 4 | 2 | 1 | 1 | 2 | 3 | 1 | 2 | 2 | 1 | 1 |
| TUC | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 3 | 7 | 10 | 2 | 6 | 2 | 1 | 3 | 5 | 1 |
| UPS | 16 | 6 | 6 | 4 | 10 | 5 | 3 | 2 | 3 | 3 | 4 | 2 | 4 | 9 | 8 | 6 | 4 | 3 | 2 | 3 | 4 | 10 | 18 | 4 |
| VAL | 3 | 5 | 3 | 5 | 12 | 3 | 4 | 2 | 2 | 4 | 9 | 12 | 8 | 9 | 21 | 12 | 2 | 5 | 4 | 6 | 2 | 6 | 11 | 5 |
| VIC | 5 | 9 | 6 | 2 | 6 | 12 | 1 | 2 | 4 | 2 | 3 | 1 | 4 | 3 | 4 | 2 | 3 | 9 | 4 | 2 | 5 | 6 | 7 | 6 |
| VSS | 4 | 3 | 1 | 1 | 4 | 1 | 2 | 1 | 1 | 2 | 6 | 10 | 7 | 1 | 11 | 9 | 1 | 3 | 3 | 1 | 4 | 2 | 3 | 1 |
| WNG | 3 | 4 | 3 | 3 | 4 | 3 | 2 | 2 | 9 | 7 | 12 | 5 | 8 | 10 | 11 | 3 | 3 | 3 | 4 | 2 | 2 | 4 | 12 | 3 |
| YKC | 13 | 20 | 15 | 87 | 289 | 278 | 103 | 33 | 130 | 71 | 42 | 27 | 38 | 44 | 67 | 37 | 14 | 21 | 19 | 16 | 22 | 20 | 20 | 11 |
- Date modified: